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发布时间：2019-03-10

论文类型：期刊论文

发表时间：2007-06-01

发表刊物：EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION

收录刊物：Scopus、EI、SCIE

卷号：6

期号：2

页面范围：197-203

ISSN号：1671-3664

关键字：aerodynamic derivatives; critical flutter wind speed; numerical simulation; wind tunnel test; long-span bridges

摘要：Combining the computational fluid dynamics-based numerical simulation with the forced vibration technique for extraction of aerodynamic derivatives, an approach for calculating the aerodynamic derivatives and the critical flutter wind speed for long-span bridges is presented in this paper. The RNG k-epsilon turbulent model is introduced to establish the governing equations, including the continuity equation and the Navier-Stokes equations, for solving the wind flow field around a two-dimensional bridge section. To illustrate the effectiveness and accuracy of the proposed approach, a simple application to the Hume Bridge in China is provided, and the numerical results show that the aerodynamic derivatives and the critical flutter wind speed obtained agree well with the wind tunnel test results.